Skip to content

Intubating Conditions of Neuromuscular Blockade

Intubating Conditions at Various Levels of Neuromuscular Blockade

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05620108
Enrollment
170
Registered
2022-11-17
Start date
2022-11-28
Completion date
2024-11-06
Last updated
2025-10-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endotracheal Intubation

Brief summary

The purpose of this research is to learn about the difference in the endotracheal intubation condition (ease of using a device to view vocal cords, position of vocal cords, and patient's reaction to endotracheal tube insertion) and determining the appropriate time to perform the intubation.

Interventions

PROCEDUREEndotracheal Intubation 2 minutes after rocuronium administration

Intubation using a video laryngoscopy will be performed 2 minutes after administration of rocuronium at 0.6 mg/kg (usual current clinical routine)

PROCEDUREEndotracheal Intubation at TOFC=1

Intubation using a video laryngoscopy will be performed after train-of-four (TOFC) stimulation indicates neuromuscular blockade

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients willing to participate and provide an informed consent. * Patients undergoing elective surgical procedures that require use of NMBA agents (rocuronium) administered intraoperatively.

Exclusion criteria

* Patients with disorders, such as stroke, carpal tunnel syndrome, broken wrist with nerve damage, Dupuytren contracture, or any similar wrist injury. * Patients with systemic neuromuscular diseases such as myasthenia gravis. * Patients with significant organ dysfunction that can significantly affect pharmacokinetics of neuromuscular blocking and reversal agents; i.e., severe renal impairment or end-stage liver disease. * Patients having surgery that would involve prepping the arm into the sterile field. * Patients receiving a rapid sequence induction.

Design outcomes

Primary

MeasureTime frameDescription
Number of Subjects With Optimal Intubating ConditionsApproximately 15 minutes after intubationThe number of subjects who had optimal intubating conditions (total composite score of 3) will be evaluated by the healthcare providers using a scale that includes 3 variables (ease of laryngoscopy, vocal cord position, and reaction to tracheal tube insertion) with 3 response options per each evaluation. The composite score (1-3) will be used, with the lowest total score of 3 correlating with optimal intubating conditions and the highest score of 9 representing the worse possible intubating conditions.

Countries

United States

Participant flow

Participants by arm

ArmCount
Intubation at TOFC=1
Subjects scheduled for an elective surgical procedure had endotracheal intubation performed when muscles were almost relaxed and monitoring showed only a single count of muscle twitch (in response to a monitor that assessed muscle relaxation) Endotracheal Intubation at TOFC=1: Intubation using a video laryngoscopy was performed after train-of-four (TOFC) stimulation indicated neuromuscular blockade
85
Intubation 2 Minutes After Rocuronium Administration
Subjects scheduled for an elective surgical procedure had endotracheal intubation performed 2 minutes after the anesthesia provider gave muscle relaxing medication Endotracheal Intubation 2 minutes after rocuronium administration: Intubation using a video laryngoscopy was performed 2 minutes after administration of rocuronium at 0.6 mg/kg (usual current clinical routine)
85
Total170

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyPhysician Decision12

Baseline characteristics

CharacteristicIntubation at TOFC=1TotalIntubation 2 Minutes After Rocuronium Administration
Age, Continuous59.8 years
STANDARD_DEVIATION 12.9
59.4 years
STANDARD_DEVIATION 13.9
59.1 years
STANDARD_DEVIATION 14.8
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants10 Participants6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
80 Participants158 Participants78 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
3 Participants7 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants5 Participants2 Participants
Race (NIH/OMB)
White
79 Participants157 Participants78 Participants
Region of Enrollment
United States
85 participants170 participants85 participants
Sex: Female, Male
Female
40 Participants78 Participants38 Participants
Sex: Female, Male
Male
45 Participants92 Participants47 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 850 / 85
other
Total, other adverse events
0 / 850 / 85
serious
Total, serious adverse events
0 / 850 / 85

Outcome results

Primary

Number of Subjects With Optimal Intubating Conditions

The number of subjects who had optimal intubating conditions (total composite score of 3) will be evaluated by the healthcare providers using a scale that includes 3 variables (ease of laryngoscopy, vocal cord position, and reaction to tracheal tube insertion) with 3 response options per each evaluation. The composite score (1-3) will be used, with the lowest total score of 3 correlating with optimal intubating conditions and the highest score of 9 representing the worse possible intubating conditions.

Time frame: Approximately 15 minutes after intubation

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Intubation at TOFC=1Number of Subjects With Optimal Intubating Conditions61 Participants
Intubation 2 Minutes After Rocuronium AdministrationNumber of Subjects With Optimal Intubating Conditions47 Participants
p-value: 0.036Wilcoxon (Mann-Whitney)

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026